 Newark | 43W9813 | 5 | | 5 | 5 @ $52.84, 10 @ $49.00, 25 @ $45.15, 50 @ $42.33, 100 @ $40.02, 250 @ $36.43 |
| Newark | 40AJ3107 | 1 | | 1 | 1 @ $43.78, 5 @ $42.70, 10 @ $41.88, 25 @ $40.48, 50 @ $39.61, 100 @ $38.99 |
| Airline Hydraulics | OMRON XS3F-E421-402-A | 1 | | 1 | 1 @ $30.90 |
 Misumi USA | XS3F-E421-402-A | 1 | | 1 | 1 @ $36.91, 10 @ $35.07, 11 @ $35.07 |
 kempstoncontrols.co.uk | XS3F-E421-402-A | 1 | | 1 | 1 @ $40.72 |
| Waldom | OMRON ELECTRONICS XS3FE421402A | 1 | | 1 | |
| Digi-Key | 3647675 | 1 | | 1 | |
 Radwell | XS3F-E421-402-A | 1 | | 1 | |
 Verical | XS3FE421402A | 1 | 14 | 1 | 1 @ $34.24, 10 @ $34.24, 100 @ $34.24, 1000 @ $34.24, 10000 @ $34.24 |
 BDI Express | XS3F-E421-402-A | 1 | | 1 | |
 Digi-Key | Z3614-ND | 1 | 172 | 1 | |
| AmazonSC | B00MEJ2MRO | 1 | | 1 | 1 @ $48.67 |
 AmazonTP | B00DKYKK12 | 1 | | 1 | 1 @ $46.63 |
| iodParts | XS3F-E421-402-A | 1 | 130 | 1 | |
| Master Electronics | XS3FE421402A | 1 | 24 | 1 | 1 @ $31.00, 5 @ $28.97 |
| Hotenda | H32698 | 1 | | 1 | 1 @ $26.72, 10 @ $24.12, 50 @ $21.67, 100 @ $20.95, 250 @ $20.86 |
| Onlinecomponents.com | XS3F-E421-402-A | 1 | 7 | 1 | 1 @ $22.26, 25 @ $20.86, 50 @ $19.48, 100 @ $18.09, 200 @ $15.30 |